Resources and Systems International, Inc. (RASI), is committed to developing and encouraging use of innovative and cost effective solutions to the complex environmental and water resources problems. RASI has established a multidisciplinary team of nationally and internationally recognized scientists and engineers, who are at cutting edge of this technology. This team is dedicated to provide high quality services in the areas of environment, watershed and water resources management, planning, and development in the US and overseas.
RASI specializes in watershed planning and management, involving multi-aquifer groundwater systems, and surface water resources. RASI offers environmental consulting in remedial design, risk assessment and management, modeling surface water and groundwater contamination from industrial, commercial, agricultural nonpoint chemical sources, hydrocarbon spills, leaking underground tanks, landfills, and seawater intrusion. RASI develops innovative computer models, provides litigation support services including expert witnesses and advanced computer animations to make site data easily understandable to everyone. RASI offers high quality training for environmental professionals, managers, and regulators.

Principal

Ashok K. Katyal, Ph.D. (President/Principal Engineer)
* Remedial design and planning
* Evaluation and optimization of restoration strategies
* Surface and groundwater resources investigation and management
* Watershed management, water resources planning, irrigation and drainage systems' design
* Risk and exposure assessment investigations
* Development and field application of numerical and analytical multidimensional models
* Modeling multiphase (water, NAPL, gas, sea-water) flow, multicomponent transport
* Modeling pollution (organic, inorganic) from point, and nonpoint sources

Brief Capability Statement

Resources & Systems International, Inc. (RASI) is dedicated to the development and application of innovative and cost-effective solutions to the environmental, watershed management, and water resources problems. RASI offers environmental consulting services in site characterization, modeling soil and groundwater contamination from hydrocarbon spills, leaking underground tanks, landfills, nonpoint chemical sources, risk assessment, and design of optimal remedial strategies. RASI also specializes in investigation and management of multi-aquifer groundwater systems, surface water resources, and watershed management. RASI develops advanced computer models and integrated database management systems customized for clients with large site monitoring and remediation activities. RASI's litigation support services includes expert witnesses and advanced computer animations to make site data easily understandable to everyone. RASI regularly offers high quality training for environmental professionals, lectures for environmental tort law professionals and multimedia training materials for professionals interested in understanding the full impact of computer modeling on the environmental and water resources industry. RASI provides clients with advanced modeling solutions through its blend of personnel with extensive experience in sub-surface/surface modeling, field investigation and design application, data visualization, and software design.

Environmental Projects

Develop comprehensive models for watershed planning and management.
Optimize the data collection and site characterization processes
Investigate fate and transport of hazardous materials in soil, groundwater, and surface water.
Design source and plume containment, and wellhead protection
Evaluate and optimize remediation strategies
Design free product recovery and pump and treat systems for restoration of contaminated groundwater aquifers
Design soil vapor extraction and vacuum enhanced recovery systems
Design air sparging systems
Conduct risk and exposure assessment studies
Assist in the preparation of environmental impact statements (EIS)

Water Resources Projects

Undertake the investigation and management of multi-aquifer groundwater systems for domestic and commercial needs
Plan and manage surface water resources
Design water conveyance and distribution network systems (open channels and pressurized)
Design irrigation and drainage systems
Land use planning and watershed management

Litigation Support

Forensic investigations to determine responsible parties and apportion cleanup costs
Offer expert witness services for environmental tort law suits, future impact claims, and other litigation
Advanced visualizations for litigation support
Application of Models to Field Sites

RASI specializes in models including:

BIOFAT
MARS
MOVER
BIOSLURP
BIOSVE
OILVOL
SOILPARA
MOFAT
MODFLOW
WSU-3D
UNFAT-3D
AT123
HPS-3D
PLUME3D
MOFAT-3D
SESOIL
DSS
HSSM
WHPA
HELP
SOHYP
VADSAT
SWMM
HSPF
SAMAPS

Innovative, State-of-the-art Computer Models

• surface water and groundwater interaction
• finite element models to investigate fate and transport of light and dense hydrocarbons, and contaminants from non-point agricultural sources in the unsaturated zone and in groundwater
• one, two and three dimensional finite element models for simulating water and dissolved phase transport in variably saturated porous media in complex hydrogeologic environments, incorporating convection, dispersion, diffusion, adsorption, desorption and microbial processes based on oxygen limited, anaerobic, first order, monod type biodegradation kinetics
• models for soil vapor extraction system design including algorithms for optimizing air pumping rates and extraction well locations
• models to simulate fate and transport of exploration and production (E&P) waste from land disposal sites
• models to estimate spill volume from free product levels data
• areal multiphase models for simulating migration and recovery of light hydrocarbons -- transport of soluble species emanating from light hydrocarbons to groundwater are modeled, incorporating convection, dispersion, diffusion and oxygen limited, and anaerobic first order and monod-type biodegredation kinetics
• sediment transport 2D/3D
• seawater intrusion in multi-aquifer system
• fate and transport in surface water (1D/2D/3D)

Visualization tools are essential to the communication and analysis process for both field data and model results. These can be in the form of X-Y plots, 2-dimensional contour plots, 3-dimensional visualization of the site and its associated data, or time variable animations of the data.

Data Management

An enormous amount of data is recorded at most environmental and water resources projects during site characterization, site remediation, risk and exposure assessment, risk management, and the post closure period. This includes precipitation and meteorological data, stream flow/stage data, water table elevations/piezometric pressures, fluid levels in monitoring wells, ground surface and top of casing elevations, soil boring logs, species concentration at various depths in soil borings, surface and groundwater quality data, water recovery/injection rates, and free product recovery rates. It is essential for successful project management to store and arrange this data so that it can be accessed and managed efficiently and accurately. RASI can provide an integrated intra- and inter-office data management solution for its clients.

Consulting Services

Innovative Computer Models

RASI develops innovative computer models and integrated database management systems customized for clients for large site monitoring and remediation activities. RASI specializes in the development and application of computer models for watershed management, simulating multiphase flow (water, NAPL, and gas) and multicomponent transport in soil and groundwater, and for water resources planning and management. These models are being widely used in the industry for risk assessment studies, remedial design, and other environmental investigations.

Environmental and Water Resources Consulting

RASI is dedicated to the development and application of innovative and cost effective solutions to environmental and water resources problems. RASI offers environmental consulting services in site characterization, modeling soil and groundwater contamination from hydrocarbon spills, leaking underground tanks, landfills, nonpoint chemical sources, risk assessment, and design of optimal remedial strategies. RASI also specializes in investigation and management of multi-aquifer groundwater systems, surface water resources, and watershed management. RASI's litigation support services include expert witnesses and advanced computer animations to make site data easily understandable to everyone. RASI regularly offers high quality training for environmental professionals, lectures for environmental tort law professionals and multimedia training materials for professionals interested in understanding the full impact of computer modeling on the environmental and water resources industry.